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Upon making the incision, carefully debride
and inspect the joint. If any prominent spurs or
osteophytes are present, especially in the area of
the superior posterior femoral condyle, remove them
with an osteotome or rongeur, as they could inhibit
the leg motion.
With medial compartment disease, osteophytes are
typically found on the lateral aspect of the medial
tibial eminence and anterior to the origin of the ACL.
Exposure
•
Remove intracondylar osteophytes to avoid
impingement with the tibial spine or cruciate
ligament, as well as peripheral osteophytes that
interfere with the collateral ligaments and capsule. In
order to reliably assess joint stability, it is crucial that
all osteophytes are removed from the entire medial
edge of both the femur and tibia.
•
Resect the deep menisco-tibial layer of the medial
capsule to provide access to any tibial osteophytes.
Exposure can also be improved with excision of
patellar osteophytes.
•
With the patient in the supine position, ensure the
knee is able to achieve 120 degrees of flexion. A
larger incision may be necessary to create sufficient
exposure.
•
Final debridement will be performed before
component implantation.
•
The NAVIO™ system technique is compatible with
the typical exposure recommendations for total knee
arthroplasty.
•
For exposure recommendations specified by the
implant system manufacturer, please consult their
instructions for use and product documentation.
1
System and Patient Setup
